package com.study;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

/**
 * @Author: leo
 * @date: 2022/4/19
 */
public class IOTest {
    public static void main(String[] args) throws IOException {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        byteArrayOutputStream.write(-1);
        byteArrayOutputStream.close();
    }
}
